Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1cf23ec51ca600…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 20:16:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0bd4a4d7ef03817686ef69abec7861c8 SHA-1: a9052d28c37f6cd95bb7fbd53961e69c2467778d SHA-256: ba1cf23ec51ca60069fb3e70d3039c9f5b53a74d203bf1fe9a9e1f4b88306f68
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-jackpot-hack-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/como-hackear-una-a-gente-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-counter-blox-spin-bot-hack_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-black-panther-mask-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hack-robux-no-inspect_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-god-mode-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-hack-no-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000364d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x364D 22768 bytes
SHA-256: f33303f1f94f9cd1c23f72ba2024571b94fa8e22329730672fd9694518122ed9
font_01_sfnt_off00006953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6953 18344 bytes
SHA-256: cead3baa2d1d10a086482c84263685540bbf4bc76bc798cce3a71f7b95e822da

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